pimiПриборы и методы измеренийDevices and Methods of Measurements2220-95062414-0473BNTU10.21122/2220-9506-2017-8-2-122-130pimi-306Research ArticleСредства измеренийMeasuring instrumentsСИСТЕМА КОНТРОЛЯ ВОЗДУШНОГО ЗАЗОРА ГИДРОГЕНЕРАТОРОВAIR GAP CONTROL SYSTEM FOR HYDROGENERATORSЗайцевЕ. А.ZaitsevI. O.ЛевицкийА. С.LevytskyiA. S.СидорчукВ. Е.SydorchukV. E.

Адрес для переписки: Сидорчук В.Е - Киевский национальный торгово-экономический университет, ул. Киото, 19, г. Киев 02156 

Address for correspondence: Sydorchuk V.E..-.Kyiv National University of Trade and Economics, Kyoto str., 19, Kyiv 02156, Ukraine      sudorchyk@ipnet.ua

sudorchyk@ipnet.uaИнститут электродинамики НАН УкраиныУкраинаInstitute of Electrodynamics of the National Academy of Sciences of UkraineUkraineКиевский национальный торгово-экономический университетУкраинаKyiv National University of Trade and EconomicsUkraine20170906201782122130Copyright © Зайцев Е.А., Левицкий А.С., Сидорчук В.Е., 20172017Зайцев Е.А., Левицкий А.С., Сидорчук В.Е.Zaitsev I.O., Levytskyi A.S., Sydorchuk V.E.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://pimi.bntu.by/jour/article/view/306

Повышение надежности работы гидрогенераторов неразрывно связано со своевременным выявлением дефектов во время их работы. Для решения этой задачи перспективным является анализ контрольно-диагностических параметров. Целью работы являлась разработка компьютеризированной информационно-измерительной системы для измерения воздушного зазора в гидрогенераторе, в которой применены два емкостных сенсора с параллельными компланарными электродами. Рассмотрен способ определения параметров формы огибающей полюсов ротора гидрогенератора относительно центра оси вращения с использованием результатов измерения воздушного зазора системой.

На основе практических исследований системы показано, что ее применение позволяет по величине информативной емкости получить высокую точность и разрешающую способность измерений зазора с возможностью линеаризации функции преобразования сенсора программным путем. Для определения отклонения формы огибающей полюсов ротора от идеального цилиндра предложено форму огибающей описывать с помощью ряда Фурье, а вычисление коэффициентов ряда производить как коэффициентов регрессии с помощью метода наименьших квадратов.

Применение данного метода при обработке измерительной информации компьютеризированной информационно-измерительной системой в совокупности с разработанным первичным преобразователем с компланарными параллельными электродами позволяет достичь высокой точности и разрешения измерений по величине информативной емкости.

In this paper, we report of the solving the actual problem of control the air gap in the hydrogenerators. The aim of the study was development of a computerized information-measuring system for measuring the air gap in the hydrogenator, which used two capacitive sensors with parallel coplanar electrodes, and the method of determining the shape of the envelope parameters hydrogenerator rotor poles relative to the center axis of rotation, using the measurement results of the air gap.

In practical studies of the sensor circuit it has been shown that its use allows for the informative value of the sensor capacitance conversion function to obtain a high accuracy and resolution measurement with digital linearization of converting function of the sensor with use program utility. To determine the form deviations of the envelope line of the rotor pole from the ideal cylinder, which is one of the main structural defects of the technological errors as results the distortion of the shape of the air gap in the hydrogenator, when the machine was manufacture and assembly. It is proposed to describe the shape of the envelope to use a Fourier transform. Calculation of the coefficients of the Fourier series is performed using the method of least squares as the regression coefficients.

Application of this method in processing the measuring data in a computerized information-measuring system the developed with the primary converter with coplanar parallel electrodes allowed attaining the high measurement accuracy and resolution informative in magnitude of the capacity.

гидрогенераторвоздушный зазоремкостной сенсорфункция преобразованиярегрессионный анализhydro generatorsair gapcapacitive sensortransfer functionregression analysisReferencesЗайцев, Є.О. Визначення функції перетворення ємнісного сенсора повітряного зазору в гідрогенераторі СГК 538/160-70М / А.С. Левицький, Є.О. Зайцев, Б.А Кромпляс // Праці Інституту електродинаміки Національної академії наук України. – 2016. – Вип. 43. – С. 134–137.Zaitsev I.O., Levytskyi A.S., Kromplyas B.A. [Determination of the response characteristic of the capacitive sensor of the air gap in the hydrogenerator SGK 538/16070М]. Pratsі Іnstitutu elektrodinamіki Nacіonal'noji akademіji nauk Ukrajini, 2016, no. 43, pp. 134–137 (in Ukrainian).Babak S.V., Myslovich M.V., Sysak R.M. Statisticheskaya diagnostika elektrotekhnicheskogo oborudovaniya [The statistical diagnostics of the electrotechnical equipment], IED NANU Publ., 2015, 456 p.Babak S.V., Myslovich M.V., Sysak R.M. Statisticheskaya diagnostika elektrotekhnicheskogo oborudovaniya [The statistical diagnostics of the electrotechnical equipment], IED NANU Publ., 2015, 456 p.Bazeev E.T., Bileka B.D., Vasil'ev E.P., Varlamov G.B., Vol'chin I.A. Energetika: istoriya, nastoyashhee i budushhee. Razvitie teploenergetiki i gidroenergetiki [Energetic: history, present and future. The development of thermal power and hydropower]. Кiev, Lira Publ., 2011, pp. 393–398.Bazeev E.T., Bileka B.D., Vasil'ev E.P., Varlamov G.B., Vol'chin I.A. Energetika: istoriya, nastoyashhee i budushhee. Razvitie teploenergetiki i gidroenergetiki [Energetic: history, present and future. The development of thermal power and hydropower]. Кiev, Lira Publ., 2011, pp. 393–398.Alekseev B.A. [Determining the status (diagnostics) of large hydro generators]. ENAS, 2002, 144 p.Alekseev B.A. [Determining the status (diagnostics) of large hydro generators]. ENAS, 2002, 144 p.Alekseev B.A. [Determining the status (diagnostics) of large turbo generators]. ENAS, 2001, 152 p.Alekseev B.A. [Determining the status (diagnostics) of large turbo generators]. ENAS, 2001, 152 p.Eriksson K., Eriksson S. VIMOS condition monitoring for hydro power machines. ABB Review, 1992, no. 1, pp. 15–20.Eriksson K., Eriksson S. VIMOS condition monitoring for hydro power machines. ABB Review, 1992, no. 1, pp. 15–20.Levytskyi A.S, Fedorenko G.M. Gruboj O.P. [Monitoring of the status of powerful hydro and turbo generators using capacitive meter for the parameters of mechanical defects]. ІED NANU Publ., 2011, 242 р.Levytskyi A.S, Fedorenko G.M. Gruboj O.P. [Monitoring of the status of powerful hydro and turbo generators using capacitive meter for the parameters of mechanical defects]. ІED NANU Publ., 2011, 242 р.Using the VM600 system to measure air gaps on hydro turbine. Pipersville, PA, USA, ZeefaxInc, 2012, 43 p.Using the VM600 system to measure air gaps on hydro turbine. Pipersville, PA, USA, ZeefaxInc, 2012, 43 p.Griscenko M., Elmanis-Helmanis R. Eccentricity of Slow-Speed Salient-Pole Generator: Analysis based on Air Gap Spectrum. Latvian Journal of Physics and Technical Sciences, 2015, vol. 52, iss.1, pp. 26.–37Griscenko M., Elmanis-Helmanis R. Eccentricity of Slow-Speed Salient-Pole Generator: Analysis based on Air Gap Spectrum. Latvian Journal of Physics and Technical Sciences, 2015, vol. 52, iss.1, pp. 26.–37.. Rasmussen, J. Condition Monitoring for Hydro Machinery / J. Rasmussen, B. Howard // Orbit. – 2004. – P. 49–57.Rasmussen J., Howard B. Condition Monitoring for Hydro Machinery. Orbit, 2004, pp. 49–57.Skvorcov O.B., Radchik I.I., Tarakanov V.M., Trunin E.S., Smirnov S.I. Ustrojstvo izmereniya vozdushnogo zazora [The device for measuring the air gap]. Patent RF no. 2318182, 2006.Skvorcov O.B., Radchik I.I., Tarakanov V.M., Trunin E.S., Smirnov S.I. Ustrojstvo izmereniya vozdushnogo zazora [The device for measuring the air gap]. Patent RF no. 2318182, 2006.Levytskyi, A.S., Zaitsev, I.O., Kromplyas, B.A. Jemnisnyj sensor dlja vymirjuvannja povitrjanogo zazoru v generatorakh [Capacitive sensor for measuring air gap between stator and rotor generators]. Patent UA no. a2016 03404, 2016.Levytskyi, A.S., Zaitsev, I.O., Kromplyas, B.A. Jemnisnyj sensor dlja vymirjuvannja povitrjanogo zazoru v generatorakh [Capacitive sensor for measuring air gap between stator and rotor generators]. Patent UA no. a2016 03404, 2016.Bissonnette R. Marc. Case Studies of Problems Diagnosed Using On-Line Machine Monitoring on Hydro-Generating Machines. Proc. of the Hydro Vision 2006, 2006, USA, Portland., pp.1–11.Bissonnette R. Marc. Case Studies of Problems Diagnosed Using On-Line Machine Monitoring on Hydro-Generating Machines. Proc. of the Hydro Vision 2006, 2006, USA, Portland., pp.1–11.Pollock G.B. Vertical hydraulic generators experience with dynamic air gap monitoring. IEEE Transactions on Energy Conversion, 1992, vol. 7, no. 4, pp. 680–668.Pollock G.B. Vertical hydraulic generators experience with dynamic air gap monitoring. IEEE Transactions on Energy Conversion, 1992, vol. 7, no. 4, pp. 680–668.Vovk I.G. [Geometric modeling of motion of systems in problems of applied geoinformatics]. Bulletin SSUGT (Siberian State University of Geosystems and Technologies) [Bulletin SSUGT (Siberian State University of Geosystems and Technologies)], 2015, no. 2 (30), pp. 72–77 (in Russian).Vovk I.G. [Geometric modeling of motion of systems in problems of applied geoinformatics]. Bulletin SSUGT (Siberian State University of Geosystems and Technologies) [Bulletin SSUGT (Siberian State University of Geosystems and Technologies)], 2015, no. 2 (30), pp. 72–77 (in Russian).Zaitsev I.O., Levytskyi A.S., Kromplyas B.A. [The errors of the capacitive sensor gap in the hydrogenator]. Pratsі Іnstitutu elektrodinamіki Nacіonal'noji akademіji nauk Ukrajini, 2016, no. 44, pp. 50–55 (in Ukrainian).Zaitsev I.O., Levytskyi A.S., Kromplyas B.A. [The errors of the capacitive sensor gap in the hydrogenator]. Pratsі Іnstitutu elektrodinamіki Nacіonal'noji akademіji nauk Ukrajini, 2016, no. 44, pp. 50–55 (in Ukrainian).Potashnik S.I., Fedorenko G.M., Vas'kovskij Yu.N. [Problems of improving the reliability of powerful hydrogenerators with the instability of the air gap]. Gidroenergetika Ukrainy [Hydropower of Ukraine], 2006, no. 3, pp. 6–10 (in Russian).Potashnik S.I., Fedorenko G.M., Vas'kovskij Yu.N. [Problems of improving the reliability of powerful hydrogenerators with the instability of the air gap]. Gidroenergetika Ukrainy [Hydropower of Ukraine], 2006, no. 3, pp. 6–10 (in Russian).Aliabad A.D., Mirsalim M., Aghdaei M.F. A Simple Analytic Method to Model and Detect Non-Uniform AirGaps in Synchronous Generators. Iranian Journal of Electrical & Electronic Engineering, 2010, vol. 6, no. 1, pp. 29–35.Aliabad A.D., Mirsalim M., Aghdaei M.F. A Simple Analytic Method to Model and Detect Non-Uniform AirGaps in Synchronous Generators. Iranian Journal of Electrical & Electronic Engineering, 2010, vol. 6, no. 1, pp. 29–35.Mikalauskas R. Air gap modelling and control possibilies in rotary systems. Ultragarsas, 2003, no. 1 (46), pp. 7–11.Mikalauskas R. Air gap modelling and control possibilies in rotary systems. Ultragarsas, 2003, no. 1 (46), pp. 7–11.Griscenko M., Elmanis-Helmanis R. Eccentricity of slow-speed salient-pole generator: analysis based on air gap spectrum. Latvian journal of physics and technical sciences, 2015, no. 1, pp. 26–37.Griscenko M., Elmanis-Helmanis R. Eccentricity of slow-speed salient-pole generator: analysis based on air gap spectrum. Latvian journal of physics and technical sciences, 2015, no. 1, pp. 26–37.Zaitsev I.O., Sidorchuk V.E., Shpil'ka, A.N. [Application of the spectrum analysis with using Berg method to developed special software tools for non-contact vibration diagnostics system]. Devices and Methods of Measurements, 2016, vol. 7, no. 2, pp. 186–194 (in Russian). doi: 10.21122/2220-9506-2016-7-2-186-194Zaitsev I.O., Sidorchuk V.E., Shpil'ka, A.N. [Application of the spectrum analysis with using Berg method to developed special software tools for non-contact vibration diagnostics system]. Devices and Methods of Measurements, 2016, vol. 7, no. 2, pp. 186–194 (in Russian). doi: 10.21122/2220-9506-2016-7-2-186-194

The authors declare that there are no conflicts of interest present.